Safety-elevator.



A. J. JARNIG.

SAFETY ELEVATOR.

A TTOBNEY A. J. JAHNIG.

SAFETY ELEVATOR.

APPLICATION FILED APR. 2,1914. 1,159,679. Patented Nov. 9, 1915.

' 2 SHEETS-SHEET 2- rW-j 1 s4-- IIVVENTOR 16 flnamw uQ//wly fie. ATTORNEY COLUMBIA PLANOORAPH co., WASHINGTON, D. c.

ANDREW J. JARNIG, 0F SEATTLE, WASHINGTON.

SAFETY-ELEVATOR.

Specification of Letters Patent.

' Patented Nov. 9,1915.

Application filed April 2, 1914. Serial No. 828,944.

To all whom it may concern:

Be it known that I, ANDREW J. JARNIG, citizen of the United States, residing at Seattle, in the county of King and State of lVashington, have invented a certain new and useful Improvement in SafetyElevators, of which the following is a specification.

My invention relates to improvement in elevators and more particularly it relates to improvements in mechanisms associated with the doors of the passageway leading into the shaft of an elevator and with the car of such elevator, and the object of my invention is to provide simple and reliable mechanism which shall be actuated by the cooperation of an elevator car and the doors of the passageways leading to the shaft within which elevator car is raised and lowered whereby such elevator car is prevented from moving unless all the doors be shut and whereby none of such doors can be opened unless the car be brought to rest with its floor in substantial alinement with the sill of the doorway whose door is to be opened. I accomplish this object by devices illustrated in the accompanying drawings in which Figure 1 is a view in elevation of the inner side of a double door of an elevator embodying my invention; Fig. 2 is a view of a modified form of link mechanism that may be used in connection with a single door embodying my invention; Fig. 3 is a view in elevation of the doors shown in Fig. 1, as they appear when in an opened position Fig.4 is an enlarged fragmentary view in vertical section on broken line 00, 0c of Fig. 1 showing the relative positions of certain parts of an elevator car; Fig. 5 is an enlarged view in cross-section of a detail of my invention, and Fig. 6 is an enlarged view in perspective of another detail of my invention.

Referring to the accompanying drawings,

in which like reference numerals indicate like parts, 10 1s a door frame of an elevator shaftand 11 and 12 are slidable doors that are provided on their top portions with rollers 13, 13 adapted to roll on tracks 14, 14 and on their bottom sides with guides 15, 15 that are adapted to project within guideways 16, 16 that are provided in the door frame 10 whereby such doors 11 and 12 may be moved edgewise to open and close the doorway to the elevator shaft, the door 11 being disposed inside of the door 12, as

more clearly shown in'Fig. 4.

secured at one end to the door 11 while its other end is pivotally secured to a sleeve 18 that is adapted to slide up and down on a vertical bar 19 that is secured to the door 12, as clearly shown in Fig. 1, the link 17 being articulated at a point intermediate of its length with the end of a lever arm 20 that is secured to the door frame 10 by a pivot 21 and is connected by another pivot 22 with the top end of a member 23' towhich is secured a shaft 2% that extends downwardly into a cylinder 25, as more clearly shown in Fig. 5, and which is rovided on its lower end with an enlarged head 26 that is adapted to engage with the lower end of a helical compression spring 27 whereby a downward pull may be exerted on the shaft 24 to closethe doors 11 and 12. e

The shorter end of the lever arm 20 is connected by a link 28 with an electrical switch29 that is located in the door frame 10 whereby an electrical circuit formed by wires 30 and 31 may be completed whenthe doors 11 and 12 are closed and be broken when such doors are opened. the wires 30v and 31 forming a part of an electrical circuitby means of which movement of an elevator car is controlled which circuit when the door is opened is broken thus preventing the elevator car from being moved until such door is closed.

The lower end of the member 23 is provided with a hook 32 that is adapted when the doors 11 and 12 are closed to engage with an other. hook 33 which is provided on the top end of a lever arm3i'that is fulcrumed on a pivot 35 in the side of the cylinder 25 and which is adapted tohave its top end move back and forth in a guide 36 that is provided on the side of thecylinder 25.

The lower end of the cylinder 25 is pivotally secured to a bracket 37 that is fastened to the door frame 10 and the lower end of the lever arm 34 is adapted to extend downwardly between two pins 38, 38 that are provided in the bifurcated shank portion 39 of a trip member 10, as more clearly shown in Fig. 6, which trip member 40 is v supported in the position shown in Fig. 4 bya flat metal spring 41 whichhas one end secured, as by welding, to the trip member 10* and its other end secured to the door frame 10 whereby when the trip member to is moved toward the doors 11 and 12 against the pressure of the sprin 1-1 the top end of the lever arm 31 will be moved away from such doors 11 and 12 and the hook 33 will be released from engagement with the hook 32, such trip member 10 being adapted to be engaged and moved by a similarly shaped engaging member .42 in response to pressure that may be exerted on the lower arm of a bell-crank shaped foot piece 13 that is dis posed within an elevator car 1d within convenient reach of the operator of such eleva tor car and with which foot piece a3 is connected a shank $15 that is provided on the engaging member &2 to extend through the side of the elevator, the bell-crank shaped foot piece %3 being pivotallv articulated with a portion of the elevator 4% by a pin 16 and being normally maintained in its raised position by a spring 17 that is associated therewith.

In Fig. 2 I have illustrated my invention as applied to a single slide door 50 instead of to two slide doors 11 and 12, the only difference in the two constructions being that the link 17 is not used and a lever 51 corresponding with the lever 20 has its outer end articulated directly with a sleeve 52 which corresponds with the sleeve 18.

The door 11 may be provided with any suitable form of handle by which it may be opened and when the doors 11 and 12 are in a closed position the switch 29 will be closed and the links and levers will be in the position shown in Fig. 1, and hooks 32 and 33 being in engagement with each other whereby the doors 11 and 12 may not be opened by persons on the outside.

As the elevator car approaches the position shown in Fig. 4, which is the position in which tile floor of the elevator is on a level with the floor of the building, the engaging surface of the member a2 is brought opposite to a similarly shaped surface on the member 40 and if the elevator car be stopped in such position and a pressure be exerted on the foot piece 13 the trip member 6L0 will be moved toward the doors 11 and 12 by the member 42 and the hook 43 will be released from engagement with the hook e2 thus permitting the doors 11 and 12 to be rolled backwardly into an open position, as shown in Fig. 3, the sleeve 18 sliding on the bar 19 and the lever arm 20 be ing raised into the position shown, thus compressing the spring 27 and also opening the switch 29. As soon as the opened elevator doors are released the spring 27 acts to close such doors and the closing of such doors by closing the switch 29 closes the circuit formed by the wires 30 and 31 which circuit may form a part of the circuit connecting between the elevator car 4A and a motor (not shown) by which such elevator car is moved whereby when the doors 11. and 12 are opened it will be impossible to move the elevator car 14 until such doors are closed, thus preventing accidental injury to passengers who enter or leave such elevator.

Obviously doors similar to the doors 11 and 12 may 2e provided on each floor of a building and many changes may be made in the form of construction of the various parts embodied in my elevator without departing from the spirit of my invention. or sacrificing any of its advantages.

ll hat 1 claim is:

1. The combination with an elevator shaft provided with passage-ways thereto having door frames and sliding doors, and an elevator car adapted by suitable motive power to be raised and lowered in said shaft, of a mechanism for automatically closing said doors, said mechanism. including a lever pivoted to each frame of said doors and having one end thereof operatively connected to said doors, a cylinder pivoted to each frame of said doors, and a spring-pressed rod carried within said cylinder and connected to said lever, a means for locking said doors in closed position carried by said cylinder, and a lock releasing means carried by the elevator car.

2. The combination with an elevator shaft provided with passage-ways thereto having, door frames and sliding doors, of a rod secured to a door of each passage-way, a sleeve adapted to slidably engage said rod, a lever operatively connected to said sleeve, said lever being pivoted near one end thereof, a link pivoted to said lever and having a lug formed thereon, a spring-presesd rod rigidly secured to said link, a cylinder pivoted to each frame of the doors and adapted to receive said spring-pressed rod, and a springcontrolled lever pivoted to said cylinder, said last-named lever being provided with a lug adapted to act in conjunction with the lug on said link whereby to lock said doors in closed position.

3. The combination with an elevator shaft provided with passage-Ways thereto having 115 door frames and sliding doors, of a mechanism for closing and locking said doors, said mechanism comprising a lever pivoted to each frame of said doors, said lever having one end thereof operatively connected to 120 said doors, a cylinder pivoted to each door frame, a spring-pressed rod carried within said cylinder and pivoted to said lever, a

lug formed on said rod, and a spring'controlled lever pivoted to said cylinder, said last-named lever being provided with a lug normally adapted to engage the lug on said rod.

4. The combinationwith an elevator shaft provided with passage-ways thereto having door frames and sliding doors, and an elevator car adapted by suitable motive power to be raised and lowered in said shaft, of a mechanism for closing and locking said doors, said mechanism comprising a lever pivoted to each frame of said doors, said lever having one end thereof operatively connected to said doors, a cylinder pivoted to each door frame, a spring-pressed rod carried Within said cylinder, said rod being extended outside of said cylinder and pivoted to said lever, a lug formed on said rod, a spring-controlled lever pivoted to said cylinder, said last-named lever being provided with a lug normally adapted to engage the lug on said rod, and a means carried by said car for effecting a separation of said lugs.

5. The combination with an elevator shaft provided with passage-ways thereto having doors, an elevator car, and an electric car moving means, of a means for closing said doors including an actuating-lever pivotally supported at a point near one end thereof and adjacent each passage-way, said lever having its other end operatively connected to said doors, a knife-switch car moving means controller provided adjacent each passage-way, a link having one end thereof pivotally connected to the first mentioned end of said lever and having its other endv pivotally connected to said controller, and a means associated with said door closing means for locking said doors in closed position. 7

6. The combination with an elevator shaft oted near one end thereof to each door frame and having its other end pivoted to said link intermediate the ends thereof.

In witness whereof, I, hereunto subscribe my name this 28th day of March A. 'D.,

ANDREWVJ. JARNIG. Vitnesses:

A. HAsKiNs, O. J OHNSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

provided with passage-ways thereto, each 

